Daewoo FRS-U20FA Series - Page 39

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1. Circuit Diagram
CONTENTS
REMARKS
■ FRS(N)-U20DA/EA/FA/GA
2. How it works;
#15≒12V
#14≒12V
#13≒12V
#12≒12V
#11≒12V
#10≒12V
#15≒12V
#14≒12V
#13≒12V
#12≒12V
#11≒12V
#10≒12V
#15≒0.7V
#14≒0.7V
#13≒0.7V
#12≒0.7V
#11≒0.7V
#10≒0.7V
#15≒0.7V
#14≒0.7V
#13≒0.7V
#12≒0.7V
#11≒0.7V
#10≒0.7V
OFF ConditionON Condition
#3≒0V#3≒5.0VRelay 3H/B Heater
IC8
#7≒0V
IC8
#7≒5.0VRelay 7Water (Dispenser)
#6≒0V#6≒5.0VRelay 6Water (Ice)
#5≒0V#5≒5.0VRelay 5Dispenser-Solenoid
#4≒0V#4≒5.0VRelay 4Dispenser-Lamp
#9≒0V#9≒5.0VRelay 9D-Heater
#8≒0V#8≒5.0VRelay 8Geared-Motor
#10≒0V#10≒5.0VRelay 10F-Lamp
#11≒0V#11≒5.0VRelay 11Cube-Solenoid
Relay 12
Relay 2
Relay 1
Control Mode
Method
IC7
IC ULN2004
Output pin
#12≒5.0V
#2≒5.0V
#1≒5.0V
MICOM Port
#12≒0V
#2≒0V
#1≒0V
MICOM Port
IC7
Comp
IC ULN2004
Output pin
Water Pipe Heater
R-Lamp
Control
IC1
(MICOM)
D-Heater
Louver Heater
Comp
R-Lamp
F-Lamp